Hello Angel,
On this Wiki page you find more information from
several different SSTV modes.
http://amateur-radio-wiki.net/index.php?title=SSTV_Modes
PD 160 - YC colour 161 seconds scan 384 lines.
Probably you can not see the PD160 button in your
MMSSTV software when there is no activity, but if you have a
new MMSSTV version it will show up as soon as you receive
an high resolution image wich is transmitted in the PD160 mode (from ISS).
73's Cor PD0RKC